From Lineage 2 Encyclopaedia

Properties

Vampiric Impulse
For 15 seconds, stirs up the blood-siphoning urge and has a chance of giving all party members the ability to recover as HP 60% of the damage inflicted on the enemy.
Class	Inspector
Type	buff
Attribute	-
Recast time	300 s
Cast time	2.5 s
Cast range	0
Classes with same skill	Inspector, Judicator

Skill Upgrade

Lvl. to Learn	Skill Lvl.	Description	MP Consume	HP Consume	SP
52	1	For 15 seconds, stirs up the blood-siphoning urge and has a chance of giving all party members the ability to recover as HP 60% of the damage inflicted on the enemy.	94	0	79
64	2	For 15 seconds, stirs up the blood-siphoning urge and has a chance of giving all party members the ability to recover as HP 70% of the damage inflicted on the enemy.	119	0	295
72	3	For 15 seconds, stirs up the blood-siphoning urge and has a chance of giving all party members the ability to recover as HP 80% of the damage inflicted on the enemy.	133	0	997